I would just send the group announcement.
infertility is shit - been there and it is horrible when you can’t get pregnant and everyone else can.
but it is something you have to deal with.
you are in your journey and she is on hers
I would hate my friend to pussy foot around telling me their wonderful news. Yes it will hurt a bit and I will feel a bit envious etc - but you having a baby is your joy. As a good friend - I will share that that joy - no matter how sad I also am about my own fertilit my path .
you having a baby is not helping nor stopping her having one. I’ve read ridiculous things online where everyone is ‘so sensitive’ to the person struggling with fertility that I don’t think is helpful.
when you are trying to get pregnant and can’t everywhere you look - your family, friends, tv , in the street you are constantly reminded of babies and it is hard - but it is yours to deal with . Getting butter that others can have children and you currently can’t is not the way I chose to handle it.
yes I cried a lot at times but I learnt to deal with my pain not by taking it out on others.
make your announcement in your group chat . Congratulations